Loudspeaker apparatus

ABSTRACT

The present disclosure discloses a loudspeaker apparatus. The loudspeaker apparatus may include a circuit housing, an ear hook, a rear hook, a loudspeaker component, and a magnetic connector. The circuit housing may be configured to accommodate a control circuit or a battery component. The ear hook may be connected to one end of the circuit housing and at least partially covered by a first protective housing. The rear hook connected to another end of the circuit housing and at least partially covered by a second protective housing. The magnetic connector may be configured to absorb a charging interface of an external power source to establish an electrical connection so as to charge the loudspeaker apparatus.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.17/661,286, filed on Apr. 28, 2022, which is a continuation of U.S.patent application Ser. No. 17/098,343, filed on Nov. 14, 2020, which isa continuation of International Application No. PCT/CN2019/102405 filedon Aug. 24, 2019, which claims priority to Chinese Patent ApplicationNo. 201910009907.7 filed on Jan. 5, 2019, the contents of each of whichare incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to the loudspeaker apparatus field, andmore particularly, relates to a sleeve-type design of a loudspeakerapparatus.

BACKGROUND

At present, a loudspeaker apparatus (e.g., headphones, MP3 players,etc.) has become an important item and been widely used (e.g., forplaying music, answering calls, etc.) in daily lives. Therefore, aloudspeaker apparatus with improved quality (e.g., a sound quality) isone of the developing direction of the loudspeaker apparatus. During amolding stage of the loudspeaker apparatus, a circuit housing foraccommodating a control circuit or a battery may be integrated with aprotective sleeve disposed on the periphery of the circuit housing.However, if the circuit housing is integrated with the protectivesleeve, a high-temperature environment may cause damage to the controlcircuit or the battery disposed in the circuit housing, which may affectthe quality of the loudspeaker apparatus.

SUMMARY

An embodiment of the present specification provides a loudspeakerapparatus. The loudspeaker apparatus may include: a circuit housingconfigured to accommodate a control circuit or a battery component; anear hook connected to one end of the circuit housing and at leastpartially covered by a first protective housing; a rear hook connectedto another end of the circuit housing and at least partially covered bya second protective housing. The first protective housing and the secondprotective housing may at least partially cover a periphery of thecircuit housing from both ends of the circuit housing in a sleevemanner, respectively; a loudspeaker component connected to one end ofthe ear hook. The loudspeaker component may include an earphone core andan earphone core housing for accommodating the earphone core; and amagnetic connector disposed on the circuit housing. The magneticconnector may be configured to absorb a charging interface of anexternal power source to establish an electrical connection so as tocharge the loudspeaker apparatus. The loudspeaker apparatus of thepresent disclosure may protect control circuits or batteries fromdamages caused by high temperatures.

BRIEF DESCRIPTION OF THE DRAWINGS

The present disclosure is further described in terms of exemplaryembodiments. These exemplary embodiments are described in detail withreference to the drawings. These embodiments are non-limiting examples,in these embodiments, the same number indicates the same structure, andwherein:

FIG. 1 is a schematic diagram illustrating an exemplary loudspeakerapparatus according to some embodiments of the present disclosure;

FIG. 2 is a schematic diagram illustrating an exploded view of a portionof the loudspeaker apparatus illustrated in FIG. 1 according to someembodiments of the present disclosure;

FIG. 3 is a schematic diagram illustrating an exploded view of a portionof the loudspeaker apparatus illustrated in FIG. 1 according to someembodiments of the present disclosure;

FIG. 4 is a schematic diagram illustrating a cross-sectional view of aportion of the loudspeaker apparatus illustrated in FIG. 1 according tosome embodiments of the present disclosure;

FIG. 5 is a schematic diagram illustrating an exemplary batterycomponent of a loudspeaker apparatus according to some embodiments ofthe present disclosure;

FIG. 6 is a schematic diagram illustrating a side view of the batterycomponent illustrated in FIG. 5 according to some embodiments of thepresent disclosure;

FIG. 7 is a schematic diagram illustrating an exemplary wiring in aflexible circuit board of the battery component illustrated in FIG. 5according to some embodiments of the present disclosure;

FIG. 8 is a schematic diagram illustrating an exploded view of a portionof a loudspeaker apparatus according to some embodiments of the presentdisclosure;

FIG. 9 is a schematic diagram illustrating a cross-sectional view of aportion of the loudspeaker apparatus as shown in FIG. 8 according tosome embodiments of the present disclosure;

FIG. 10 is a schematic diagram illustrating an enlarged view of aportion A in FIG. 9 according to some embodiments of the presentdisclosure;

FIG. 11 is a schematic diagram illustrating a first top view of amagnetic connector of a loudspeaker apparatus according to someembodiments of the present disclosure;

FIG. 12 is a schematic diagram illustrating a second top view of amagnetic connector of a loudspeaker apparatus according to someembodiments of the present disclosure;

FIG. 13 is a schematic diagram illustrating a third top view of amagnetic connector of a loudspeaker apparatus according to someembodiments of the present disclosure;

FIG. 14 is a schematic diagram illustrating a simplified structure of aloudspeaker apparatus according to some embodiments of the presentdisclosure;

FIG. 15 is a graph illustrating an exemplary vibration response of aloudspeaker apparatus according to some embodiments of the presentdisclosure;

FIG. 16 is a graph illustrating another exemplary vibration response ofa loudspeaker apparatus according to some embodiments of the presentdisclosure; and

FIG. 17 is a schematic diagram illustrating sound transmitting throughair conduction according to some embodiments of the present disclosure.

DETAILED DESCRIPTION

In order to illustrate the technical solutions related to theembodiments of the present disclosure, a brief introduction of thedrawings referred in the description of the embodiments is providedbelow. Obviously, drawings described below are only some examples orembodiments of the present disclosure. Those skilled in the art mayapply the present disclosure to other similar scenarios according tothese drawings without further creative efforts. It should be understoodthat these embodiments are only provided for those skilled in the art topractice the application, but not intended to limit the scope of thepresent disclosure. The same numeral in the drawings refers to the samestructure or operation, unless it can be obviously obtained from thecontext or the context illustrates otherwise.

As used in the disclosure and the appended claims, the singular forms“a,” “an,” and “the” include plural referents unless the content clearlydictates otherwise. In general, the terms “comprise” and “include”merely prompt to include steps and elements that have been clearlyidentified, and these steps and elements do not constitute an exclusivelisting. The methods or devices may also include other steps orelements. The term “based on” is “based at least in part on”. The term“one embodiment” means “at least one embodiment”; the term “anotherembodiment” means “at least one other embodiment”. Related definitionsof other terms will be given in the description below. In the following,without loss of generality, in describing the present disclosureregarding conduction-related technologies, the description of the“loudspeaker apparatus” or “loudspeaker” will be used. This descriptionis only a form of conduction application. For those skilled in the art,the “loudspeaker apparatus” or “loudspeaker” may also be replaced byother similar words, such as “sound generation apparatus”, “hearing aiddevice” or “speaker”. In fact, the various implementations in thepresent disclosure may be easily applied to other acoustic devices. Forexample, for those skilled in the art, after understanding the basicprinciples of loudspeaker apparatus, it is possible to make variousmodifications and alterations to the structure of and/or methodsrelating to the loudspeaker apparatus without departing from thisprinciple. Merely by way of example, an ambient sound acquisition andprocessing function may be added to the loudspeaker apparatus, so thatthe loudspeaker apparatus may realize the function of a hearing aid. Forexample, a microphone may detect an ambient sound of the user/wearer,process the ambient sound according to a certain algorithm, and transmitthe processed ambient sound (or a generated electrical signalrepresenting the processed ambient sound) to a loudspeaker component.That is, the loudspeaker apparatus may be modified to include thefunction of detecting an ambient sound, a sound may be transmitted tothe user/wearer through the loudspeaker component after certain signalprocessing, thereby realizing the functions of the hearing aid and theloudspeaker apparatus simultaneously. For example, the algorithmmentioned herein may include a noise cancellation algorithm, anautomatic gain control algorithm, an acoustic feedback suppressionalgorithm, a wide dynamic range compression algorithm, an activeenvironment recognition algorithm, an active noise reduction algorithm,a directional processing algorithm, a tinnitus processing algorithm, amulti-channel wide dynamic range compression algorithm, an activehowling suppression algorithm, a volume control algorithm, or the like,or any combination thereof.

FIG. 1 is a schematic diagram illustrating an exemplary loudspeakerapparatus according to some embodiments of the present disclosure. FIG.2 is a schematic diagram illustrating an exploded view of a portion ofthe loudspeaker apparatus illustrated in FIG. 1 according to someembodiments of the present disclosure. FIG. 3 is a schematic diagramillustrating an exploded view of a portion of the loudspeaker apparatusillustrated in FIG. 1 according to some embodiments of the presentdisclosure. FIG. 4 is a schematic diagram illustrating a cross-sectionalview of a portion of the loudspeaker apparatus illustrated in FIG. 1according to some embodiments of the present disclosure.

As shown in FIGS. 1-4, in some embodiments, the loudspeaker apparatusmay be an apparatus, such as headphones, an MP3, or another apparatuswith a speaker function. Specifically, the loudspeaker apparatus mayinclude circuit housing(s) 10, ear hook(s) 20, a rear hook 30,loudspeaker component(s) 40, control circuit(s) 51, one or morebatteries 52, etc. A circuit housing 10 may be configured to accommodatea control circuit 51 and/or a battery 52. A loudspeaker component 40 mayinclude an earphone core housing 41. The earphone core housing 41 may beconnected to an ear hook 20 and configured to accommodate an earphonecore 42. In some embodiments, the count of the circuit housing(s) 10 andthe count of the ear hook(s) 20 may be two, which may correspond to aleft side and a right side of a user, respectively. For a certain earhook 20, an earphone core housing 41 and a circuit housing 10 may bedisposed at both sides of the certain ear hook 20, respectively. Therear hook 30 may be further disposed at a side of the circuit housing 10away from the certain ear hook 20.

As shown in FIG. 2, a first protective housing 21 may beinjection-molded on an ear hook 20. Specifically, the ear hook 20 mayinclude a first elastic wire for supporting the shape of the ear hook20. An ear hook protective sleeve 22 may be injection-molded outside aperiphery of the first elastic wire. The ear hook protective sleeve 22may further form a first protective housing 21 integrated with the earhook protective sleeve 22 at a connected portion between the ear hook 20and a circuit housing 10. That is, the first protective housing 21 maybe placed on a side of the ear hook protective sleeve 22 facing thecircuit housing 10.

Similarly, the rear hook 30 may be injection-molded with a secondprotective housing 31. Specifically, the rear hook 30 may also include asecond elastic wire for supporting the shape of the rear hook 30, and arear hook protective sleeve 32 injection-molded outside a periphery ofthe second elastic wire. The rear hook protective sleeve 32 may form asecond protective housing 31 integrated with the rear hook protectivesleeve 32 at a connected portion between the rear hook 30 and thecircuit housing 10. That is, the second protective housing 31 may beplaced on a side of the rear hook protective sleeve 32 facing thecircuit housing 10.

In some embodiments, the first protective housing 21, the ear hookprotective sleeve 22, the second protective housing 31, and the rearhook protective sleeve 32 may include a soft material with a certainelasticity, such as soft silicone, rubber, etc., so as to provide userswith a better touch.

In some embodiments, the circuit housing 10, the first protectivehousing 21, and the second protective housing 31 may be moldedseparately. The shape of an inner side wall of the first protectivehousing 21 may match the shape of at least part of an outer side wall ofthe circuit housing 10 near the ear hook 20. The shape of an inner sidewall of the second protective housing 31 may match the shape of at leastpart of an outer side wall of the circuit housing 10 near the rear hook30. Furthermore, after the circuit housing 10, the first protectivehousing 21, and the second protective housing 31 are molded separately,the first protective housing 21 may be placed outside a periphery of thecircuit housing 10 near the ear hook 20 from a side of the circuithousing 10 facing the ear hook 20 in a sleeve manner, and the secondprotective housing 31 may be placed outside a periphery of the circuithousing 10 near the rear hook 30 from a side of the circuit housing 10facing the rear hook 30 in a sleeve manner, such that the circuithousing 10 may be covered by the first protective housing 21 and thesecond protective housing 31.

It should be noted that the high environment temperature during themolding of the first protective housing 21 and the second protectivehousing 31 may cause certain damages to the control circuit 51 or thebattery 52 accommodated in the circuit housing 10. By molding thecircuit housing 10, the first protective housing 21, and the secondprotective housing 31 separately, and then assembling them togetherinstead mounting the first protective housing 21 and the secondprotective housing 31 on the periphery of the circuit housing 10directly by injection molding, the damage caused by the high temperatureto the control circuit 51 or the battery 52 during the molding may beavoided, thereby reducing negative effects on the control circuit 51 orthe battery 52 in the molding.

In some embodiments, the circuit housing 10 may include main sidewall(s) 11, auxiliary side wall(s) 12, and end wall(s) 13 connected toeach other. For example, the circuit housing 10 may be a flat housing.The flat circuit housing 10 may include two opposite main side wall 11with relatively larger areas than other walls. When a user wears theloudspeaker apparatus, one of the two opposite main side walls 11 mayattach (or approximately attach) to the head, and the other oppositemain side wall may be away from the head. The auxiliary side wall(s) 12and end wall(s) 13 may be used to connect the two main side walls 11.When the user wears the loudspeaker apparatus, the auxiliary sidewall(s) 12 may include two side walls facing an upper side and a lowerside of the user's head. The end wall(s) 13 may include a side wall ofthe circuit housing 10 near one end of the ear hook 20 and a side wallof the circuit housing 10 near one end of the rear hook 30, whereinthese two side walls may be opposite to each other and face a front sideand back side of the user's head, respectively, when the user wears theloudspeaker apparatus. The main side wall(s) 11, the auxiliary sidewall(s) 12, and the end wall(s) 13 may be connected to each other toform the circuit housing 10.

In some embodiments, the first protective housing 21 may include an openend 211. The open end 211 may be sleeved on at least a portion of thecircuit housing 10. For example, the open end 211 may cover the endwall(s) 13 on the side of the circuit housing 10 facing the ear hook 20,and optionally a portion of the main side wall(s) 11 and the auxiliaryside wall(s) 12 near the ear hook 20. The second protective housing 31may include an open end 311. The open end 311 may be sleeved on at leasta portion of the circuit housing 10. For example, the open end 311 maycover the end wall 13(s) on one side of the circuit housing 10 facingthe rear hook 30 and optionally a portion of the main side wall(s) 11and the auxiliary side wall(s) 12 near the rear hook 30. In someembodiments, the open end 211 and the open end 311 may be coupled witheach other on the main side wall(s) 11 and the auxiliary side wall(s) 12of the circuit housing 10 so as to cover the entire circuit housing 10.

In an exemplary application scenario, the first protective housing 21and the second protective housing 31 may not completely cover the entirecircuit housing 10. For example, an exposure hole may be disposed at thecircuit housing 10 for mounting a button and/or a charging interface tofacilitate user operation.

After the first protective housing 21 and the second protective housing31 are placed outside the periphery of the circuit housing 10, the twoprotective housings may be fixed on the circuit housing 10 by a certainmeans, thereby fixing the circuit housing 10 to the protective housings.

Specifically, in some embodiments, an inner surface of the firstprotective housing 21 corresponding to the main side wall(s) may includepositioning convex(es) 215. An inner surface of the second protectivehousing 31 corresponding to the main side wall(s) 11 may includepositioning convex(es) 315. An outer surface of the main side wall(s) 11may be provided with positioning concave(s) 111 matching the positioningconvex(es) 215 and a positioning concave(s) 112 matching the positioningconvex(es) 315.

The positioning convex(es) 215 may be located on an inner side wall nearthe open end 211. For example, the positioning convex(es) 215 mayinclude a ring-shaped convex surrounding the inner side wall of thefirst protective housing 21, or a plurality of convexes disposed atintervals on the inner side wall of the first protective housing 21,which may be determined according to actual needs. In some embodiments,a count of the positioning convex(es) 215 may be two. The twopositioning convexes 215 may be located on the inner side walls of thefirst protective housing 21 corresponding to two side walls 11 of thecircuit housing 10, respectively. Similarly, a count of the positioningconvex(es) 315 may also be two. The two positioning convexes 315 may belocated on the inner side walls of the second protective housing 31corresponding to the two main side walls 11 of the circuit housing 10,respectively.

In some embodiments, after the first protective housing 21 and thesecond protective housing 31 are sleeved on both sides of the circuithousing 10, respectively, the positioning convex(es) 215 may be embeddedinto the positioning concave(s) 111, and the positioning convex(es) 315may be embedded into the positioning concave(s) 112, such that the openend 211 of the first protective housing 21 and the open end 311 of thesecond protective housing 31 may be elastically abutted together,thereby covering the circuit housing 10.

Further, in some embodiments, an outer side wall 313 of a region of thesecond protective housing 31 that covers the end wall(s) 13 of thecircuit housing 10 may be arranged obliquely with respect to theauxiliary side wall(s) 12. Specifically, when the user wears theloudspeaker apparatus, a direction from a side of the outer side wall313 of the second protective housing 31 near the upper side of theuser's head to a side near the lower side of the user's head may beoblique in a direction away from the rear hook 30.

In some embodiments, the positioning convex(es) 215 and the positioningconvex(es) 315 may be in the form of strips along the open end 211 andthe open end 311, respectively, and may be arranged obliquely withrespect to the auxiliary side wall(s) 12. Further, a seam 101 betweenthe first protective housing 21 and the second protective housing 31 onthe main side wall(s) 11 of the circuit housing 10 may also be arrangedobliquely with respect to the auxiliary side wall(s) 12. The obliquedirections the positioning convex(es) 215, the positioning convex(es)315, and the seam 101 between the first protective housing 21 and theprotective housing 31 on the main side wall(s) 11 of the circuit housing10 may be the same as an oblique direction of the outer side wall 313 ofthe region of the second protective housing 31 that covers the endwall(s) 13 of the circuit housing 10, thereby making the loudspeakerapparatus more consistent in appearance.

In an exemplary application scenario, a cover area of one of the firstprotective housing 21 and the second protective housing 31 on thecircuit housing 10 may be not less than half of a cover area of theother one of the first protective housing 21 and the second protectivehousing 31 on the circuit housing 10. For example, the cover area of thefirst protective housing 21 on the circuit housing 10 may be not lessthan half of the cover area of the second protective housing 31 on thecircuit housing 10. Alternatively, the cover area of the secondprotective housing 31 on the circuit housing 10 may be not less thanhalf of the cover area of the first protective housing 21 on the circuithousing 10. It should be noted that the cover area of the firstprotective housing 21 on the circuit housing 10, the cover area of thesecond protective housing 31 on the circuit housing 10, and the ratiobetween the two cover areas may be modified according to needs. Forexample, the two cover areas may be the same, which is not specificallylimited here.

In some embodiments, the rear hook 30 may further include a plug end 33facing an end of the circuit housing 10 as shown in FIG. 3. The secondprotective housing 31 may be sleeved on at least part of the plug end33. Specifically, the plug end 33 may be injection-molded at an end ofthe second elastic wire. The rear hook protective sleeve 32 may befurther injection-molded outside the second elastic wire and part of theplug end 33, and a second protective housing 31 may be integrally moldedat the plug end 33, such that the second protective housing 31 may besleeved on a peripheral region of the plug end 33 that is not covered bythe rear hook protective sleeve 32.

Further, the circuit housing 10 may include a jack 14 facing the rearhook 30. The jack 14 may be located on an end wall 13 of the circuithousing 10 near the rear hook 30, and extended from a side of the endwall 13 near an auxiliary side wall 12 to the rear hook 30.

The plug end 33 may be at least partially inserted into the jack 14. Twoslots 331 perpendicular to an insertion direction of the plug end 33relative to the jack 14 may be located on opposite sides of the plug end33, respectively. The plug end 33 may include two slots 331 disposed ontwo opposite sides of the plug end 33. The two slot 331 may beperpendicular to an insertion direction of the plug end 33 relative tothe jack 14, and spaced apart from each other by a distance and arrangedon the opposite sides of the plug end 33 symmetrically. Further, the twoslots 331 may be connected to a side wall corresponding to the plug end33 in a direction perpendicular to the insertion direction of the plugend 33.

Accordingly, a first side wall 15 of the jack 14 may be provided with afirst through hole 151 corresponding to the positions of the two slots331. The first side wall 15 of the jack 14 may be placed outside theperiphery of the jack 14 and face the lower side of the user's head whenthe loudspeaker is worn by the user.

In some embodiments, the loudspeaker apparatus may further include afixing component 53. The fixing component 53 may include two pins 531disposed in parallel and a connecting part 532 for connecting the pins531. In some embodiments, the two pins 531 may be disposed in parallel,and the connecting part 532 may be vertically connected to a same sideof the two pins 531, thereby forming a U-shaped fixing component 53.

The pins 531 may be inserted into the slots 331 through the through holefrom an outer side wall of the first side wall 15 of the jack 14 so asto block the connecting part 532 outside the jack 14, thereby achievinga plug connection between the circuit housing 10 and the rear hook 30.

In some embodiments, a second through hole 161 opposite to the firstthrough hole 151 may be disposed on a second side wall 16 opposite tothe first side wall 15 on the jack 14. The pins 531 may be furtherinserted into the second through hole 161 through the slots 331. Thesecond side wall 16 may be an auxiliary side wall 12 of the circuithousing 10 near the jack 14, and when the loudspeaker apparatus is wornby the user, the auxiliary side wall 12 may face the upper side of theuser's head.

In some embodiments, the pins 531 may be inserted into the slots 331through the first through hole 151 and further inserted into the secondthrough hole 161 through the slots 331. In other words, the pins 531 maycompletely penetrate and establish a connection between the plug end 33and the two opposite side walls of the plug end 33, thereby achieving amore stable plug connection between the circuit housing 10 and the rearhook 30.

In some embodiments, the plug end 33 may be divided into a first plugsection 332 and a second plug section 333 along an insertion directionof the plug end 33 relative to the jack 14. A cross-section area of thefirst plug section 332 may be larger than that of the second plugsection 333 in a cross-sectional direction perpendicular to theinsertion direction of the plug end 33 relative to the jack 14.

The rear hook protective sleeve 32 may be injection-molded on the firstplug section 332 of the plug end 33, and the second protective housing31 may be integrally injection-molded at a connected portion between thefirst plug section 332 and the second plug section 333. Further, theslots 331 may be located on the second plug section 333, and the secondplug section 333 may be inserted into the jack 14. The plug end 33 maybe exposed outside the jack 14.

In some embodiments, the first plug section 332 may include a firstwiring duct 3321 extending along an insertion direction of the plug end33 relative to the jack 14. The second plug section 333 may include asecond wiring duct 3331 located on an outer end surface of the secondplug section 333 that is far from the first plug section 332. The secondwiring duct 3331 may extend along a direction perpendicular to theinsertion direction of the plug end 33 and penetrate at least one outerside. Specifically, the first wiring duct 3321 may be located on a sideof the first plug section 332 near the auxiliary side wall(s) 12 of thejack 14, and penetrate both end surfaces of the first plug section 332along the insertion direction of the plug end 33 relative to the jack14. The second wiring duct 3331 may penetrate two outer sides of thesecond plug section 333 perpendicular to an extending direction of thesecond wiring duct 3331.

In addition, an inner side wall of the jack 14 may include a thirdwiring duct 162 with one end connected to the first wiring duct 3321 andthe other end connected to the second wiring duct 3331. The third wiringduct 162 may be formed by recessing an inner wall surface of the secondside wall 16.

In some embodiments, the circuit housing 10 may include an innerpartition wall 17 inside the housing to form an accommodating cavity 18spaced apart from the jack 14. Specifically, the main side wall(s) 11,the auxiliary side wall(s) 12, and the end wall(s) 13 of the circuithousing 10 may form an accommodating space. The inner partition wall 17may divide the accommodating space into two parts including theaccommodating cavity 18 and the jack 14. The inner partition wall 17 mayfurther include a wiring hole 171 connecting the jack 14 and theaccommodating cavity 18.

In some embodiments, the loudspeaker apparatus may further include arear hook wire 34. The rear hook wire 34 may pass through the rear hook30. Two ends of the rear hook wire 34 may be connected to the controlcircuit 51 and the battery 52, respectively. Specifically, the rear hookwire 34 may pass through the rear hook 30, the first wiring duct 3321,the third wiring duct 162, and the second wiring duct 3331 successively,and then pass through the wiring hole 171 and enter the accommodatingcavity 18, so as to connect to the control circuit 51 or the battery 52.

It should be noted that the above description of the earphone corehousing of the loudspeaker apparatus is only a specific example, andshould not be regarded as the only feasible implementation solution.Obviously, for those skilled in the art, after understanding the basicprinciple of earing of an earphone core of the loudspeaker apparatus, itis possible to make various modifications and alterations in the formand details of the structure and/or related methods of the earphone corehousing (or a portion thereof) without departing from this principle,but these amendments and alterations are still within the scopedescribed above. For example, the circuit housing may be integrated withthe rear hook. All such variations are within the protection scope ofthe present disclosure.

FIG. 5 is a schematic diagram illustrating an exemplary batterycomponent of a loudspeaker apparatus according to some embodiments ofthe present disclosure. FIG. 6 is a schematic diagram illustrating aside view of the battery component illustrated in FIG. 5 according tosome embodiments of the present disclosure. FIG. 7 is a schematicdiagram illustrating an exemplary wiring in a flexible circuit board ofthe battery component illustrated in FIG. 5 according to someembodiments of the present disclosure. In some embodiments, the circuithousing 10 may include a first circuit housing 10 a (as shown in FIG. 1)and a second circuit housing 10 b (as shown in FIG. 1). The loudspeakerapparatus may further include a flexible circuit board 54 which may beaccommodated together with the battery 52 in the accommodating cavity 18(as shown in FIG. 4) of the first circuit housing 10 a. The flexiblecircuit board 54 may be a Flexible Printed Circuit (FPC). The battery 52may include a positive terminal and a negative terminal.

The flexible circuit board 54 may include a first board 541 and a secondboard 542. One end of the first board 541 may be fixed to the battery52, and the other end may be connected to the second board 542. Theflexible circuit board 54 may be integrated as a whole, with the firstboard 541 and the second board 542 as two regions thereof. The secondboard 542 may include a bonding pad and a flexible lead connecting thebonding pad. The first board 541 may only include a flexible lead forconnecting a corresponding bonding pad on the second board 542 to thebattery 52. As shown in FIG. 6, the first board 541 may be bent becausethe first board 541 only includes a flexible lead, such that theposition of the flexible circuit board 54 may be adjusted according toneeds.

In some embodiments, a plurality of bonding pads, which may be spacedapart from each other, may be placed on the second board 542. Theplurality of bonding pads may include two first bonding pads 543 and aplurality of second bonding pads 544. The first board 541 and the secondboard 542 may be provided with two first flexible leads 545. The twofirst bonding pads 543 may be electrically connected to the positiveterminal and the negative terminal of the battery 52 by the two firstflexible leads 545, respectively.

In some embodiments, the plurality of second bonding pads 544 may bedivided into at least two groups. A count of second bonding pads 544 ineach group may be determined according to actual needs. For example, thecount of second bonding pads 544 in each group may be two, and the twosecond bonding pads 544 may be electrically connected to each other by asecond flexible lead 546 disposed on the second board 542. Each of thetwo second bonding pads 544 in each group may be connected to afunctional component by wires, and then the two functional componentscorresponding to the two second bonding pads 544 in one group may beconnected through the second flexible lead 546.

In some embodiments, the bonding pads for circuit switching may belocated on the second board 542 of the flexible circuit board 54, andconnected to the battery 52 through the first board 541 of the flexiblecircuit board 54, such that the first board 541 may be bent according toactual conditions (e.g., the available space, etc.) to place the secondboard 542, thereby optimizing a space utilization of the accommodatingcavity 18 of the first circuit housing 10 a and improving a spaceutilization rate. The two first bonding pads 543 may be directlyconnected to the positive terminal and the negative terminal of thebattery 52 through the first flexible lead 545 on the flexible circuitboard 54 instead of using additional bonding pads to lead the positiveand negative terminals of the battery 52, thereby reducing the count ofbonding pads and simplifying the equipment structure and relatedprocesses.

In some embodiments, the first board 541 may be folded to cause thesecond board 542 attached to a side surface of the battery 52, such thatthe first board 541 and the battery 52 may be stacked, thereby greatlyreducing the space occupied by the battery 52 and the flexible circuitboard 54.

Specifically, the battery 52 may include a battery core 521. The batterycore 521 may include a body region 5211 and a sealing region 5212. Thebody region 5211 and the sealing region 5212 may be tiled. The thicknessof the body region 5211 may be greater than that of the sealing region5212, such that a side surface of the sealing region 5212 and a sidesurface of the body region 5211 may form a step.

Specifically, the side surfaces of the sealing region 5212 and the bodyregion 5211 in a thickness direction of the battery core 521 may form astep, such that the second board 542 may make use of a space formed bythe body region 5211 and the sealing region 5212 of the battery core 521without providing extra space for placing the flexible circuit board 54,thereby further improving the space utilization rate.

In some embodiments, the battery 52 may further include a hard circuitboard 522, which may be arranged on a side surface of the sealing region5212 of the battery core 521. Specifically, the positive and negativeterminals may be arranged on the hard circuit board 522, and aprotection circuit (not shown) may further be arranged on the hardcircuit board 522 to protect the battery 52 from overload.

In some embodiments, an end of the first board 541 far from the secondboard 542 may be fixedly attached to the rigid circuit board 522, suchthat two flexible leads on the first board 541 may be connected to thepositive terminal and the negative terminal on the hard circuit board522. Specifically, the first board 541 and the hard circuit board 522may be directly pressed together during manufacturing.

Further, the shapes of the first board 541 and the second board 542 maybe determined according to actual conditions. In some embodiments, theshape of the first board 541 may match that of the sealing area 5212 ofthe battery core 521, and both of them may have the shape of rectangles.The shape of the second board 542 may also be rectangular. The secondboard 542 may be disposed at one end in a length direction of the firstboard 541, and perpendicular to the first board 541 along the lengthdirection. Further, the first board 541 may be connected to a middleregion of the second board 542 in a length direction, such that thefirst board 541 and the second board 542 may be of a T shape.

The arrangement of the first bonding pads 543 and the second bondingpads 544 on the second board 542 may be various, for example, all thebonding pads may be arranged along a straight line, or arrangedaccording to another shape.

In some embodiments, the two first bonding pads 543 may be arranged sideby side in a middle region of the second board 542 along a lengthdirection of the second board 542. The plurality of second bonding pads544 may be further distributed on both sides of the two first bondingpads 543 along the length direction of the second board 542. And thesecond bonding pads 544 in each group may be arranged adjacently.

In some embodiments, the second bonding pads 544 in each group may bespaced apart from each other by interval arranged along a widthdirection of the second board 542, and may be staggered from each otheralong the length direction of the second board 542, such that the secondbonding pads 544 in each group may be arranged like a step. In this way,an interval region at an even level between two adjacent groups ofsecond bonding pads 544 may be avoided, such that an intensitydistribution of the second board 542 may be more uniform, therebyreducing the occurrence of bending between the two adjacent groups ofsecond bonding pads 544 and a breaking probability of the second board542 due to bending, which may protect the second board 542. Moreover, adistance between different bonding pads may be increased, therebyfacilitating soldering, and reducing short circuits between differentbonding pads.

The present disclosure also provides a battery assembly. In someembodiments, the battery assembly may include the battery 52 and theflexible circuit board 54. The battery assembly in some embodiments maybe applied in an apparatus that needs a circuit switching at the battery52, such as a headphone, MP3, etc. For example, the battery assembly maybe applied in the loudspeaker apparatus in the present disclosure.

Further, in some embodiments, the rear hook 30 may be connected to oneend of the first circuit housing 10 a, and include a plurality of rearhook wires 34 (as shown in FIG. 4). The ear hook 20 may be connected tothe other end of the first circuit housing 10 a, and include a pluralityof ear hook wires 23.

In some embodiments, each group of the second bonding pads 544 mayinclude two second bonding pads 544. The ear hook wires 23 and thecorresponding rear hook wires 34 may be electrically connected to twosecond bonding pads 544 in a same group of the second bonding pads 544,respectively. Further, functional element(s) connected to the rear hookwires 34 and functional element(s) connected to the ear hook wires 23may be connected by connecting the second flexible lead 546 of the twosecond bonding pads 544 in each group.

In some embodiments, an earphone core housing 41 may further accommodatefunction module(s), such as a key switch 431, etc. In addition, thecontrol circuit 51 may be accommodated in a second circuit housing 10 b.The second board 542 may include four groups of second bonding pads 544.

The ear hook wires 23 may include two audio signal wires 231, that is, afirst ear hook wire 2311 and a second ear hook wire 2312 both connectedto the earphone core 42. The rear hook wires 34 may include a first rearhook wire 341 and a second rear hook wire 342 connected to the controlcircuit 51 and used to transmit audio signals to the earphone core 42.The first ear hook wire 2311 and the first rear hook wire 341, thesecond ear hook wire 2312 and the second rear hook wire 342 may beconnected to different bonding pads in different groups of the secondbonding pads 544, respectively. Specifically, the first ear hook wire2311 and the first rear hook wire 341 may be connected to two secondbonding pads 544 in a same group of the second bonding pads 544,respectively. The second ear hook wire 2312 and the second rear hookwire 342 may be connected to two second bonding pads 544 of anothergroup of the second bonding pads 544, respectively. In this way, theearphone core 42 and the control circuit 51 may be electricallyconnected to transmit audio signals.

In addition, the ear hook wire 23 may include at least two auxiliarysignal wires 232, for example, a third ear hook wire 2321 and a fourthear hook wire 2322 which are both connected to the key switch 431. Therear hook wire 34 may further include a third rear hook wire 343 and afourth rear hook wire 344 connected to the control circuit 51 fortransmitting key signals to the key switch 431. The third ear hook wire2321 and the third rear hook wire 343, the fourth ear hook wire 2322 andthe fourth rear hook wire 344 may be connected to different secondbonding pads 544 in different groups of the second bonding pads 544,respectively. The third ear hook wire 2321 and the third rear hook wire343 may be connected to two second bonding pads 544 in a same group ofthe second bonding pads 544, respectively. The fourth ear hook wire 2322and the fourth rear hook wire 344 may be connected to two second bondingpads 544 in another group of the second bonding pads 544, respectively.In this way, the key switch 431 may be electrically connected to thecontrol circuit 51 to transmit key signals. In some embodiments, the twogroups of the second bonding pads 544 for transmitting key signals maybe different from the two groups of the second bonding pads 544 fortransmitting audio signals to the earphone core 42.

In some embodiments, the rear hook wires 34 may include a fifth rearhook wire 345 and a sixth rear hook wire 346 connected to the controlcircuit 51 and used to supply power to the control circuit 51. The fifthrear hook wire 345 and the sixth rear hook wire 346 may be connected tothe two first bonding pads 543, respectively, such that the battery 52may be connected to the control circuit 51.

It should be noted that the above description of the battery module ofthe loudspeaker apparatus is only a specific example, and should not beconsidered as the only feasible implementation solution. Obviously, forthose skilled in the art, after understanding the basic principle of thebattery module of the loudspeaker apparatus, it is possible to makevarious modifications and alterations in the form and details of thestructure and related methods of the battery module of the loudspeakerapparatus without departing from this principle, but these modificationsand alterations are still within the scope described above. For example,the earphone core housing 41 may further accommodate auxiliary functionmodules such as a voice control module and a microphone module. All suchvariations are within the protection scope of the present disclosure.

FIG. 8 is a schematic diagram illustrating an exploded view of a portionof a loudspeaker apparatus according to some embodiments of the presentdisclosure. FIG. 9 is a schematic diagram illustrating a cross-sectionalview of a portion of the loudspeaker apparatus as shown in FIG. 8according to some embodiments of the present disclosure. As shown inFIG. 8 and FIG. 9, the loudspeaker apparatus may include a magneticconnector 55. The magnetic connector 55 may be used together with acharging interface of a charger to charge the loudspeaker apparatus.Specifically, when charging the loudspeaker apparatus, the magneticconnector 55 and the charging interface of the charger may match eachother and be adsorbed together to establish an electrical connection tocharge the loudspeaker apparatus. In some embodiments, the magneticconnector 55 may include a magnetic adsorption ring 551, an insulationbase 552, a first terminal 553, and a second terminal 554.

The magnetic adsorption ring 551 may be a magnet, and the magneticpolarities of an outer end and an inner end may be different. As usedherein, an outer end of a component of a loudspeaker apparatus refers toan end that is closer to the environment of the loudspeaker apparatus(e.g., exposed from the loudspeaker apparatus), and an inner end of thecomponent refers to an end that is further from the environment of theloudspeaker apparatus (e.g., located inside the loudspeaker apparatus).The power interface of the charger may have a magnetic adsorptionstructure that matches the magnetic adsorption ring 551. The charginginterface of the charger may have a magnetic adsorption structure thatmatches the magnetic adsorption ring 551. The magnetic adsorptionstructure may include one or more magnetic materials. For example, themagnetic adsorption structure may include iron, or the like, which maybe adsorbed with the magnetic adsorption ring 551 whether the outer endof the magnetic adsorption ring 551 is the south pole or the north pole.As another example, the magnetic adsorption structure may include amagnet. The magnetic adsorption ring 551 and the magnetic adsorptionstructure may be adsorbed together only when the magnetic polarity ofthe outer end of the magnetic adsorption structure and the magneticpolarity of the outer end of the magnetic adsorption ring 551 areopposite. When the magnetic connector 55 and the charging interface areadsorbed with each other, a terminal of the magnetic connector 55 maycontact a corresponding terminal of the charging interface, and anelectrical connection may be established between the magnetic connector55 and the charging interface.

In some embodiments, the outer end of the magnetic adsorption ring 551may have a ring shape. The magnetic adsorption ring 551 and the magneticadsorption structure of the charging interface may be adsorbed togethervia the ring-shaped outer end. Due to the hollow design of thering-shaped outer end, the magnetic adsorption ring 551 may be adsorbedwith the charging interface and confined by magnetic forces in differentdirections. This may improve the stability of the electrical connectionbetween the magnetic adsorption ring 551 and the charging interface ofthe charger.

FIG. 10 illustrates a partially enlarged view of a portion A in FIG. 9according to some embodiments of the present disclosure. In someembodiments, at least part of the insulation base 552 may be insertedinto the magnetic adsorption ring 551 to fix the magnetic adsorptionring 551. The insulation base 552 may include at least two accommodationholes 5521. The extending direction of the at least two accommodationholes 5521 may be parallel to the height direction of the insulationbase 552. The at least two accommodation holes 5521 may penetrate anouter end of the insulation base 552. In some embodiments, theinsulation base 552 may include one or more insulating materials, suchas PC or PVC.

Further, the first terminal 553 and the second terminal 554 may bothhave a shape of a cylinder. The count of the terminals may be equal tothe count of the accommodation holes 5521. Each of the terminals may beinserted into one of the accommodation holes 5521. An outer end of aterminal may be exposed from the top surface of the insulation base 552through the corresponding accommodation hole 5521, that is, the outerend of the terminal may be visible seen from a direction facing the topsurface of the insulation base 552. The outer end of a terminal of themagnetic connector 55 may flush with the top surface of the insulationbase 552 to form a contact surface 5531 and a second contact surface5541. The first terminal 553 and the second terminal 554 may correspondto the positive and negative terminals of the charging interface,respectively. Correspondingly, the first contact surface 5531 and thesecond contact surface 5541 may contact with the charging interface toestablish an electrical connection.

In some embodiments, when the magnetic connector 55 and the charginginterface are adsorbed with each other, the magnetic connector 55 may berestricted by magnetic forces from different directions applied by thehollow ring-shaped magnetic adsorption ring 551, such that the situationthat a “solid” surface is easily staggered, deviated, and cannot beaccurately positioned may be reduced. The first contact surface 5531 andthe second contact surface 5541 may be accurately positioned and contactwith the charging interface to establish an electrical connection. Thismay improve the accuracy of the electrical connection between themagnetic adsorption ring 551 and the charging interface of the charger.

In some embodiments, the insulation base 552 may include a supportingmember 5522 and an insertion member 5523. The supporting member 5522 andthe insertion member 5523 may be located along a direction parallel toan axis of the accommodation hole 5521. A cross-section area of thesupporting member 5522 may be larger than that of the insertion member5523, thereby forming a supporting table 55221.

The outer side wall of the insertion member 5523 may match the innerside wall of the magnetic adsorption ring 551, such that the insertionmember 5523 may be inserted into the magnetic adsorption ring 551 to fixthe magnetic adsorption ring 551. Two ends of an accommodation hole 5521of the insulation base 552 may run through an outer end of the insertionmember 5523 and an outer end of the supporting member 5522 away fromeach other, such that the first terminal 553 and the second terminal 554may run through the entire insulation base 552. Further, the firstterminal 553 and the second terminal 554 may be exposed from the outerend of the insertion member 5523 away from the supporting member 5522 toconnect with an internal circuit.

Specifically, the insertion member 5523 may be inserted into themagnetic adsorption ring 551 from an end away from the supporting member5522, and an inner end (i.e., an end opposite to its outer end) may besupported by the support table 55221. The dimension of an outer side ofthe magnetic adsorption ring 551 may match that of the supporting member5522, so as to achieve a uniform structure of the magnetic connector.

In some embodiments, the magnetic connector 55 may further include ahousing 555. The housing 555 may be sleeved on the periphery of theinsulation base 552 and magnetic adsorption ring 551, so that themagnetic connector 55 may be assembled on the charging interface of theloudspeaker apparatus as a whole.

The housing 555 may include one or more non-magnetic metal materials(e.g., copper, aluminum, and/or aluminum alloy), a plastic material, orthe like, or any combination thereof.

In some embodiments, a housing 555 of the magnetic connector 55 may bemade of metal so as to obtain a thin housing satisfying a strengthrequirement, thereby reducing an occupation of space.

Specifically, the housing 555 may include a body 5551 and a flange 5552located at the outer end of the body 5551 and protruding into the body5551. The outer end of the housing 555 may be partially open due to theflange 5552, and the inner end of the housing 555 may be completelyopen. The inner surface of the body 5551 may match the outer surface ofthe magnetic member ring 551 and the supporting member 5522 of theinsulation base 552. The flange 5552 may cover the outer end of themagnetic adsorption ring 551. The first contact surface 5531 of thefirst terminal 553 and the second contact surface 5541 of the secondterminal 554 may be exposed, such that the housing 555 may be sleeved onthe periphery of the insulation base 552, the first terminal 553, thesecond terminal 554, and the magnetic adsorption ring 551 through theinner end. The flange 5552 may cover an end of the magnetic adsorptionring 551 away from the supporting member 5522. The first contact surface5531 and the second contact surface 5541 may be exposed through thepartially opening end for establishing an electrical connection to thecharging interface.

In some embodiments, the outer end of the insertion member 5523 of theinsulation base 552 far from the supporting member 5522 may be protrudedfrom the end of the magnetic adsorption ring 551 far from the supportingmember 5522. The shape of the partially opening end formed by the flange5552 may match the shape of the periphery of the insertion member 5523,so that the end of the insertion member 5523 far from the supportingmember 5522 may extend through the partially opening end of the housing555 to the outside of the housing 555.

In some alternative embodiments, the outer end of the insertion member5523 of the insulation base 552 may be sunken relative to the outer endof the flange 5552.

It should be noted that the magnetic connector 55 in this embodiment maybe applied to a charging interface of an electronic device or a charginginterface of a charger, so as to cooperate with a charging interface ofa corresponding charger or an electronic device to supply power to theelectronic device. In some embodiments, the top surface of theinsulation base 552 may be protruded or sunken relative to the topsurface of the flange 5552, such that the magnetic connector 55 mayprotrude into the corresponding charging interface so as to form aconnection between the magnetic connector 55 and the correspondingcharging interface, such that a connection between the magneticconnector 55 and the corresponding charging interface may be morestable.

Further, in some embodiments, the outer peripheral wall of thesupporting member 5522 and the inner peripheral wall of the body 5551may be mechanically connected to each other via a buckle connection. Thebuckle connection may improve the stability of the mechanical connectionbetween the housing 555, the insulation base 552, and the magneticadsorption ring 551, thereby improving the stability of the magneticconnector 55.

Specifically, in an exemplary application scenario, two through grooves55511 may be located on two opposite surfaces of the outer peripheralwall of the body 5551, respectively. Correspondingly, the supportingmember 5522 may include two buckles 55222 matching the two throughgrooves 55511. The housing 555 may be sleeved on the supporting member5522 of the insulation base 552 via the buckle connections between thethrough grooves 55511 and the buckles 55222. For example, whenassembling the magnetic connector 55, the housing 555 may be sleeved onthe periphery of the insulation base 552, and a buckle of the supportingmember 5522 may be buckled on a side wall of a corresponding throughgroove 55511, thereby fixing the housing 555 on the periphery of theouter peripheral wall of the supporting member 5522.

It should be noted that the specific shape of the magnetic adsorptionring 551 in some embodiments may be modified according to differentneeds.

In some embodiments, the outer end of the magnetic adsorption ring 551may be rotationally symmetrical with respect to a preset symmetry point.When the magnetic adsorption ring 551 rotates, the first contact surface5531 and the second contact surface 5541 may rotate together with themagnetic adsorption ring 551. The first contact surface 5531 and thesecond contact surface 5541 before rotating may at least partiallyoverlap the first contact surface 5531 and the second contact surface5541 after rotating. That is, the surface formed by the first contactsurface 5531 and the second contact surface 5541 may be or close torotationally symmetrical with respect to the same preset symmetry point.The shape of the outer end of the magnetic adsorption ring 551 and theangle of rotation symmetry may be determined based on the arrangement ofthe first contact surface 5531 and the second contact surface 5541.

For example, the outer end of the magnetic adsorption ring 551 may havea shape of a circular ring, an elliptical ring, a rectangular ring,etc., as long as it is consistent with the arrangement of the firstcontact surface 5531 and the second contact surface 5541 such that thefirst contact surface 5531 and the second contact surface 5541 beforethe symmetrical rotation may partially overlap the second contactsurface 5541 after the symmetrical rotation.

Due to the rotationally symmetrical shape of the outer end of themagnetic adsorption ring 551, the magnetic adsorption ring 551 may bemoved back to its original position after a symmetrical rotation. Themagnetic adsorption ring 551 may have at least two assembly positionsrelative to the first contact surface 5531 and the second contactsurface 5541, and the magnetic connector 55 and the charging interfacemay be adsorbed with each other at a plurality of rotation angles toestablish an electrical connection.

Specifically, as shown in FIG. 10, in some embodiments, the outer end ofthe magnetic adsorption ring 551 may have a shape of a circular ringwith the center as the symmetry point. The first contact surface 5531and the second contact surface 5541 may respectively have a shape of acircular or a circular ring concentrically arranged with the magneticadsorption ring 551.

When the magnetic adsorption ring 551 rotates symmetrically at any anglewith respect to the symmetry point, both the first contact surface 5531and the second contact surface 5541 before rotating may completelyoverlap the first contact surface 5531 and the second contact surface5541 after rotating. In assembling, the magnetic adsorption ring 551 maybe sleeved on the periphery of the inserting portion 5523 of theinsulation base 552 concentrically with the first contact surface 5531and the second contact surface 5541 without referring other positions.When the magnetic adsorption ring 551 absorbs a corresponding magneticadsorption structure of the charging interface, the first contactsurface 5531 and the second contact surface 5541 may be corresponding toa positive terminal and a negative terminal of the charging interface,respectively, and the magnetic connector 55 and the charging interfacemay be adsorbed with each other without further calibration, which isconvenient for users.

In some embodiments, as shown in FIG. 11, the first contact surface 5531and the magnetic adsorption ring 551 may be arranged as two concentriccircles, and the second contract surface 5541 may be arranged as a pointlocated at the center of the first contact surface 5531 and the magneticadsorption ring 551. When the magnetic adsorption ring 551 rotates, thefirst contact surface 5531 before rotating may be completely overlapitself after rotating, and the second contract surface 5541 beforerotating may be completely overlap itself after rotating.

In some embodiments, as shown in FIG. 12, the count of the first contactsurface 5531 may be one, and the count of the second contact surface5541 may be one. The first contact surface 5531 and the second contactsurface 5541 may be arranged in a 180 degrees rotationally symmetricalshape with respect to the symmetry point. When the magnetic adsorptionring 551 rotates 180 degrees, the first contact surface 5531 afterrotating may completely overlap the second contact surface 5541 beforerotating, and the second contact surface 5541 after rotating maycompletely overlap the first contact surface 5531 before rotating.

In some embodiments, as shown in FIG. 13, the count of the first contactsurface 5531 may be one, and the count of the second contact surface5541 may be two. The outer end of the magnetic adsorption ring 551 mayhave a 180 degrees rotationally symmetrical shape with respect to thesymmetry point. When the magnetic adsorption ring 551 rotates 180degrees, the first contact surface 5531 and the second contact surface5541 before rotating may at least partially overlap the first contactsurface 5531 and the second contact surface 5541 after rotating,respectively. In some embodiments, a dimension of the magneticadsorption ring 551 in a first direction passing through the symmetrypoint may be different from a dimension of the magnetic adsorption ring551 in a second direction perpendicular to the first direction passingthrough the symmetry point. For example, the outer end of the magneticadsorption ring 551 may have a shape of an elliptical ring, arectangular ring, or the like.

In some embodiments, the dimension of the magnetic adsorption ring 551in the first direction may be greater than that in the second direction.The count of the first contact surface 5531 may be one, and the firstcontact surface 5531 may be located at the symmetry point of themagnetic adsorption ring 551. The count of the second contact surface5541 may be two. When the magnetic adsorption ring 551 rotates withrespect to the symmetry point, the two second contact surfaces 5541 mayrotate with respect to the first contact surface 5531. When the magneticadsorption ring 551 rotates 180 degrees, the two second contact surfaces5541 may swap positions with each other.

Further, the two second contact surfaces 5541 may be on both sides ofthe symmetry point along the first direction. When the magneticadsorption ring 551 rotates 180 degrees, any one of the two secondcontact surfaces 5541 before rotating may at least partially overlap theother second contact surface 5541 after rotating. Since the two contactsurfaces are along the first direction, the two second contact surfaces5541 may be located in a same straight line before or after rotating,and may swap positions with each other. That is, one of the secondcontact surfaces 5541 after rotating may be located on a position of theother second contact surface 5541 before rotating. Therefore, when anyone of the two second contact surfaces 5541 before rotating at leastpartially overlaps another second contact surface 5541 after rotating,the two second contact surfaces 5541 before rotating may at leastpartially overlap the two second contact surfaces 5541 after rotating.

Specifically, the first contact surface 5531 and the two second contactsurfaces 5541 may be 180 degrees rotationally symmetric with respect tothe symmetry point, that is, the first contact surface 5531 and thesecond contact surface 5541 may be 180 degrees rotationally symmetricwith respect to a center point of the first contact surface 5531, suchthat the first contact surface 5531 and the second contact surface 5541before a symmetrical rotation may completely overlap the first contactsurface 5531 and the second contact surface 5541 after the symmetricalrotation. And when rotating in other degrees, the first contact surface5531 and the second contact surface 5541 before a symmetrical rotationmay not completely overlap the first contact surface 5531 and the secondcontact surface 5541 after the symmetrical rotation.

In some embodiments, a shape of the first contact surface 5531 may bethe same as or different from that of the second contact surface 5541.While shapes of the two second contact surfaces 5541 may be the same.For example, the first contact surface 5531 and the second contactsurface 5541 may be circular surfaces, or may be other surfaces that cancompletely overlap after being rotated 180 degrees with respect to thecenter point of the first contact surface 5531.

In this way, before and after the symmetrical rotation in 180 degreeswith respect to the symmetry point, the magnetic adsorption ring 551 mayface two opposite directions. At the same time, the first contactsurface 5531 and the second contact surface 5541 before the symmetricalrotation in 180 degrees may at least partially overlap the first contactsurface 5531 and the second contact surface 5541 after the symmetricalrotation in 180 degrees. Accordingly, when the magnetic connector 55 isassembled, the magnetic adsorption ring 551 may be sleeved on theperiphery of the insertion member 5523 of the insulation base 552 havingthe first terminal 553 and the second terminal 554 in two oppositedirections, thereby facilitating assembly. In addition, when couplingthe magnetic connector 55 and the corresponding charging interface, themagnetic connector 55 may be coupled with the corresponding charginginterface in two opposite directions, which may be convenient for users.

In some embodiments, the magnetic adsorption ring 551 may be dividedinto at least two ring sections 5511 in the circumferential direction.The outer ends of the adjacent ring sections 5511 may have differentmagnetic polarities.

The division of ring section 5511 may be performed according to acertain rule. For example, if the outer end of the magnetic adsorptionring 551 has an annular shape, the magnetic adsorption ring 551 may beequally divided along its radial direction. Merely by way of example,the magnetic adsorption ring 551 may be quartered into four ringsections 5511 with the same shape. As another example, the magneticadsorption ring 551 may be divided randomly, which is not specificallylimited here.

Specifically, in actual use, it is necessary to contact the firstcontact surface 5531 and the second contact surface 5541 with exposedsurfaces of corresponding terminals of the corresponding charginginterface, thereby establishing an electrical connection between themagnetic connector 55 and the corresponding charging interface, andsupplying power to the loudspeaker apparatus. When the first contactsurface 5531, the second contact surface 5541, and the exposed surfacesof the terminals in the corresponding charging interface are incorrectlyconnected, a correct electrical connection between the magneticconnector 55 and the corresponding charging interface may not beestablished, and the power may not be supplied to the loudspeakerapparatus.

In some embodiments, the magnetic polarity of the outer end of each ringsection 5511 may be determined according to the connection between thecontact surface(s) (e.g., the first contact surface 5531 and/or thesecond contact surface 5541) and the terminal(s) of the charginginterface. When a connection between the contact surface(s) (e.g., thefirst contact surface 5531 and/or the second contact surface 5541) andthe terminal(s) of the charging interface is a valid connection, themagnetic polarity of the outer end of each ring section 5511 may beopposite to that of the outer end of a corresponding magnetic adsorptionstructure of the charging interface. The contact surface(s) (e.g., thefirst contact surface 5531 and/or the second contact surface 5541) canbe adsorbed with the terminal(s) of the charging interface because themagnetic polarity of the outer end of each ring section 5511 may bedifferent from that of the outer end of a corresponding magneticadsorption structure of the charging interface. When the connectionbetween the contact surface(s) (e.g., the first contact surface 5531and/or the second contact surface 5541) and the terminal(s) of thecharging interface is an invalid connection, the magnetic polarity ofthe outer end of each ring section 5511 may be opposite to that of theouter end of a corresponding magnetic adsorption structure of thecharging interface. The contact surface(s) (e.g., the first contactsurface 5531 and/or the second contact surface 5541) cannot be adsorbedwith the terminal(s) of the charging interface because the magneticpolarity of the outer end of each ring section 5511 may be the same asthat of the outer end of a corresponding magnetic adsorption structureof the charging interface, which may avoid a wrong connection that makesthe magnetic connector 55 unable to perform normal work, therebyimproving the accuracy and efficiency of coupling, and providingconvenience to users.

In some embodiments, the magnetic adsorption ring 551 may be dividedinto two ring sections 5511 in the circumferential direction.

Specifically, the outer end surface of the magnetic adsorption ring 551may have a regular symmetrical shape of a circular ring, an ellipticalring, a rectangular ring, etc., as described in the above embodiments,such that the magnetic adsorption ring 551 may be divided into two ringsections 5511 along a symmetry axis of the regular ring. Or the magneticadsorption ring 551 may be an irregular ring, which may becorrespondingly divided into two asymmetric ring sections 5511. Thespecific division may be determined according to needs, which is notspecifically limited here.

In some embodiments, the first contact surface 5531 and the secondcontact surface 5541 as shown in FIG. 12 may be arranged side by sideand corresponding to a positive terminal and a negative terminal of thecharging interface, respectively. A dimension of the magnetic adsorptionring 551 in a first direction passing through the symmetry point may bedifferent from a dimension of the magnetic adsorption ring 551 in asecond direction perpendicular to the first direction passing throughthe symmetry point. Specifically, the dimension of the magneticadsorption ring 551 in the first direction may be greater than that inthe second direction, and the outer end of the magnetic adsorption ring551 may have a shape of an elliptical ring. Further, the magneticadsorption ring 551 may be divided into two ring sections 5511 arrangedside by side along a symmetry axis of the elliptical ring in the firstdirection or the second direction. The magnetic polarity of the outerend face of one ring section 5511 may be N pole, and the magneticpolarity of the outer end face of the other ring section 5511 may be Spole. Further, the first contact surface 5531 and the second contactsurface 5541 of the magnetic connector 55 may also be arranged side byside. In some embodiments, the first contact surface 5531 and the secondcontact surface 5541 may be arranged in a 180 degrees rotationallysymmetrical shape with respect to the symmetry point.

A shape and a count of the magnetic adsorption structure(s) of thecharging interface may be the same as that of the magnetic adsorptionring 551 of the magnetic connector 55. The magnetic polarity of theouter end of a magnetic adsorption structure of the charging interfacemay be opposite to that of the outer end of a corresponding ring section5511 of the magnetic adsorption ring 551.

If a connection between the contact surface(s) (e.g., the first contactsurface 5531 and/or the second contact surface 5541) and the terminal(s)of the charging interface is a valid connection, a ring section 5511 ofthe magnetic adsorption ring 551 may be adsorbed with a correspondingmagnetic adsorption structure of the charging interface to establish anelectrical connection. If a connection between the contact surface(s)(e.g., the first contact surface 5531 and/or the second contact surface5541) and the terminal(s) of the charging interface is an invalidconnection, a ring section 5511 with the magnetic polarity of N pole maycorrespond to a magnetic adsorption structure with the magnetic polarityof N pole, a ring section 5511 with the magnetic polarity of S pole maycorrespond to a magnetic adsorption structure with the magnetic polarityof S pole, the ring section 5511 and the corresponding magneticadsorption structure cannot be adsorbed with a corresponding magneticadsorption structure of the charging interface. This may avoid aninvalid connection between the magnetic connector 55 and the charginginterface and is convenient for users.

The present disclosure also provides a magnetic connector 55 includingthe specific structure of the magnetic connector 55 in the loudspeakerapparatus described above. The magnetic connector 55 may be used in acharging interface of an electronic device including the loudspeakerapparatus of the present disclosure, or a power supply interface of acharger, which may be used to absorb a charging interface to positionand to establish an electrical connection so as to charge the electronicdevice. Related structures of the magnetic connector 55 and thetechnical effects that may be generated may refer to the aboveembodiment, and will not be repeated here.

The present disclosure may also provide a magnetic connector component,which includes two magnetic connectors 55 as described in the presentdisclosure. A shape and a count of the ring section(s) 5511 of themagnetic adsorption ring 551 of one magnetic connector 55 may be thesame as that of the other magnetic connector 55. A magnetic polarity ofthe ring section(s) 5511 of the magnetic adsorption ring 551 of the onemagnetic connector 55 may be opposite to that of the other magneticconnector 55. When the two magnetic connectors absorb each other, afirst contact surface 5531 and a second contact surface 5541 of the onemagnetic connector 55 may contact with a first contact surface 5531 anda second contact surface 5541 of the other magnetic connector 55. Otherrelated details may refer to the above embodiments, which will not berepeated here.

The magnetic polarity of the outer end surface of each ring section 5511of the two magnetic connectors 55 may be set such that when a firstcontact surface 5531 and a second contact surface 5541 of the onemagnetic connector 55 contacts with a first contact surface 5531 and asecond contact surface 5541 of the other magnetic connector 55, the twomagnetic connectors 55 may be adsorbed together to establish a validconnection if outer ends of their ring sections have opposite magneticpolarities. When the first contact surface 5531 and the second contactsurface 5541 of the one magnetic connector 55 contacts with the firstcontact surface 5531 and the second contact surface 5541 of the othermagnetic connector 55, the one magnetic connector 55 and the othermagnetic connector 55 cannot be adsorbed together if the outer ends oftheir ring sections have the same magnetic polarity. This may avoid aninvalid connection between the two magnetic connectors 55, therebyimproving the accuracy and efficiency of coupling.

Further, in the embodiments of the loudspeaker apparatus in the presentdisclosure, the magnetic connector 55 may be mounted in a circuithousing 10, for example, a circuit housing 10 for accommodating thecontrol circuit 51.

The circuit housing 10 may include two main side walls 11 spaced apartfrom each other. An inner surface of at least one main side wall 11 mayinclude two blocking walls 19 spaced apart from each other. The twoblocking walls 19 may be arranged in parallel with an end wall 13 of thecircuit housing 10. The two main side walls 11 and the two blockingwalls 19 may form an accommodating space near a secondary side wall 12,and the magnetic connector 55 may be located in the accommodating space.

In some embodiments, each of the two main side walls 11 may furtherinclude a mounting hole 113. The loudspeaker apparatus may furtherinclude two fixing components 56. The two fixing components 56 may beinserted into the mounting holes 113 of the two main side walls 11,respectively, and fix the magnetic connector 55.

The count of the mounting holes 113 and the count of the fixingcomponents 56 may be the same. Merely by way of example, a fixingcomponent 56 may be a screw. An end of the screw may pass through amounting hole 113 of a main side wall 11 to abut against the outer sidewall of the magnetic connector 55, and the other end of the screw may befixed in the mounting hole 113.

In some embodiments, each of the two main side walls 11 may include amounting hole 113. The magnetic connector 55 may have a 180 degreesrotationally symmetrical structure with respect to a symmetry axisparallel to a direction the magnetic connector 55 along which it isinserted into the accommodating space surrounded by the two main sidewalls 11 and the two blocking walls 19. Each of the opposite sides ofthe magnetic connector 55 may include two mounting holes 55512 forreceiving the fixing components 56. After the magnetic connector 55 isrotated symmetrically and inserted into the accommodating space, atleast one of the two mounting holes 55512 of each of the opposite sidesof the magnetic connector 55 may be aligned with a mounting hole 113.

Specifically, the mounting hole 55512 may be configured to receive aninner end of the fixing component 56. The two ends of the fixingcomponent 56 may run through the mounting hole 113 and the mounting hole55512, respectively, to fix the magnetic connector 55 in theaccommodating space.

In some embodiments, the magnetic connector 55 may have 180 degreesrotationally symmetrical shape. In this way, there are two mountingholes matching the mounting holes 113 no matter whether the magneticconnector 55 is rotated or not, so as to fix magnetic connector 55 atthe two positions, which may facilitate the mounting of the magneticconnector 55.

Further, the first protective housing 21 or the second protectivehousing 31 may cover the mounting hole 113 on the main side wall(s) 11.And the corresponding first protective housing 21 and/or the secondprotective housing 31 may include an exposing hole 57 for the magneticconnector 55 to be exposed, which may facilitate the use of theloudspeaker apparatus.

It should be noted that the above description of the magnetic connectorof the loudspeaker apparatus is only a specific example, and should notbe regarded as the only feasible implementation solution. Obviously, forthose skilled in the art, after understanding the basic principle of themagnetic connector of the loudspeaker apparatus, it is possible to makevarious modifications and alterations in the form and details of thespecific method and step of the magnetic connector of the loudspeakerapparatus without departing from this principle, but these modificationsand alterations are still within the scope described above. For example,center axes of the two fixing components 56 may be parallel to eachother and arranged side by side. Therefore, the center axes of the twofixing components 56 may not overlap, such that the magnetic connector55 may be fixed more stably in the circuit housing 10. All suchvariations are within the protection scope of the present disclosure.

FIG. 14 is a schematic diagram illustrating a simplified structure of aloudspeaker apparatus according to some embodiments of the presentdisclosure. As shown in FIG. 14, in some embodiments, the loudspeakerapparatus may include a headphone holder/headphone strap 1201, avibration unit 1202, and a transducing apparatus 1203. The vibrationunit 1202 may include a contact surface 1202 a and a housing 1202 b. Thetransducing apparatus 1203 may be placed inside and connected to thevibration unit 1202. The vibration unit 1202 may contact a user throughthe contact surface 1202 a. For example, the contact surface 1202 a mayfit anywhere on the user's head, such as the top of the head, forehead,cheeks, horns, auricles, back of auricles, etc.

It should be noted that the transducing apparatus 1203 be configured toimplement same functions as or similar functions to the earphone core inthe above embodiments. The earphone holder/earphone strap 1201 may beconfigured to fix the loudspeaker apparatus to a human head, which mayinclude the ear hook 20, the rear hook 30, and the circuit housing 10 inthe above embodiments. The loudspeaker component 40 in the aboveembodiments may include the vibration unit 1202, which may refer to asound generating structure of the loudspeaker apparatus.

During use, the headset stand/headband 1201 may fix the loudspeakerapparatus to a specific part of the user (e.g., a head), and provide aclamping force between the vibration unit 1202 and the user. The contactsurface 1202 a may be connected to the transducing apparatus 1203 andkeep contact with the user, and transmit sound to the user throughvibration. In some embodiments, the loudspeaker apparatus may have asymmetrical structure. The transducing apparatus on both sides mayprovide equal and opposite driving forces in a working process. In suchcases, a center point of the earphone holder/earphone strap 1201 may beregarded as an equivalent fixed end (e.g., a position shown in 1204)when the loudspeaker apparatus works. In some embodiments, theloudspeaker apparatus may provide stereo sound, that is, driving forcesprovided by the two transducing apparatuses may have different sizes, orthe loudspeaker apparatus may be asymmetry in structure. Then anotherpoint or region of the earphone rack/earphone strap 1201 or outside theearphone rack/earphone strap 1201 may be regarded as an equivalent fixedend. A fixed end may be regarded as an equivalent end at a relativelyfixed position when the loudspeaker apparatus generates vibrations. Insome embodiments, a sound transmission efficiency of the loudspeakerapparatus may be changed and a frequency response of the system in aspecific frequency range may be affected by changing one or morephysical quantities, such as the clamping force provided by the headsetholder/headband 1201 and the quality of the headset holder/headband1201. For example, a headset holder/headband 1201 including ahigh-strength material may provide a clamping force different from aheadset holder/headband 1201 including a low-strength material.Additionally or alternatively, the clamping force may be changed bychanging a structure of the earphone holder/earphone strap 1201 and/oradding an auxiliary apparatus that can provide an elastic force to theearphone holder/earphone strap 1201, thereby affecting the soundtransmission efficiency. The change in the size of the earphoneholder/headband 1201 when worn may also affect the clamping force. Theclamping force may increase with a distance between the vibration units1202 at both ends of the earphone holder/headphone holder 1201.

Further, in order to obtain an earphone holder/earphone strap 1201 thatmeets a specific clamping force condition, those skilled in the art maychoose materials with different rigidity and/or different modulus tomake the earphone holder/earphone strap 1201, or adjust a size of theearphone holder/earphone strap 1201 according to the actual situation.It should be noted that the clamping force of the headphoneholder/headband 1201 may not only affect the efficiency of soundtransmission, but also affect a sound experience of the user in a bassfrequency range. The clamping force mentioned here may be a pressurebetween a contact surface and the user. Preferably, the clamping forcemay be between 0.1N-5N. More preferably, the clamping force may bebetween 0.1N-4N, and even more preferably, the clamping force may bebetween 0.2N-3N. Still preferably, the clamping force may be between0.2N-1.5N, and even more preferably, the clamping force may be between0.3N-1.5N.

FIG. 15 is a graph illustrating an exemplary vibration response of aloudspeaker apparatus according to some embodiments of the presentdisclosure. FIG. 16 is a graph illustrating another exemplary vibrationresponse of a loudspeaker apparatus according to some embodiments of thepresent disclosure. As shown in FIG. 15 and FIG. 16, in a transmissionprocess of vibrations, a clamping force below a certain threshold maynot be conducive to a transmission of high-frequency vibrations. Asshown in FIG. 15, for a same vibration source (sound source), when theclamping force is 0.1N, the vibrations (sound) received by a wearer inan intermediate frequency and a high frequency in may be significantlyless than the vibrations (sound) received in the intermediate frequencyand the high frequency when the clamping force is 0.2N or 1.5N. That is,in terms of sound quality, when the clamping force is 0.1N, the soundperformance in the intermediate frequency and the high frequency may beweaker than that in the intermediate frequency and the high frequencywhen the clamping force is 0.2N-1.5N. Similarly, in the transmissionprocess of vibrations, a clamping force greater than a certain thresholdmay be not conducive to the transmission of low-frequency vibrations. Asshown in FIG. 16, for a same vibration source (sound source), when theclamping force is 5.0N, vibrations (sound) received by the wearer in anintermediate frequency and a low frequency may be significantly lessthan the vibrations (sound) received in the intermediate frequency andthe low frequency when the clamping force is 0.2N or 1.5N. That is, interms of sound quality, when the clamping force is 5.0N, the soundperformance in the low frequency may be weaker than that in the lowfrequency when the clamping force is 0.2N-1.5N.

In some embodiments, the pressure between the contact surface and theuser may be kept in an appropriate range by selecting an appropriateearphone holder/earphone strap 1201. The pressure between the contactsurface and the user should be greater than a certain threshold.Preferably, the threshold may be 0.1N. More preferably, the thresholdmay be 0.2N. More preferably, the threshold may be 0.3N, and even morepreferably, the threshold may be 0.5N. The pressure between the contactsurface and the user should be less than another threshold. Preferably,the threshold may be 5.0N. More preferably, the threshold may be 4N.Further preferably, the threshold may be 3N, and even more preferably,the threshold may be 1.5 N.

In some embodiments, the loudspeaker apparatus described above maytransmit sound to the user by means of air conduction. When transmittingsound by means of air conduction, the loudspeaker apparatus may includeone or more sound sources. The sound sources may be located at aspecific position of the user's head, such as the top of the head,forehead, cheeks, horns, auricle, back of auricle, etc., withoutblocking or covering ear canals. For illustration purposes, FIG. 17 is aschematic diagram illustrating sound transmitting through air conductionaccording to some embodiments of the present disclosure.

As shown in FIG. 17, a sound source 3010 and a sound source 3020 maygenerate sound waves with opposite phases (“+” and “−” in the figureindicate opposite phases). For simplicity, a sound source used hereinmay refer to a sound output hole on the loudspeaker apparatus. Forexample, the sound source 3010 and the sound source 3020 may be twosound output holes located at specific positions (e.g., the earphonecore housing 41, or the circuit housing 10) on the loudspeakerapparatus.

In some embodiments, the sound source 3010 and the sound source 3020 maybe generated by a same vibration apparatus 3001. The vibration apparatus3001 may include a vibration diaphragm (not shown in figures). When thevibration diaphragm is driven by an electric signal to vibrate, a frontside of the vibration diaphragm may drive air to vibrate, and the soundsource 3010 may be formed at the sound output hole through a soundguiding channel 3012. A back side of the vibration diaphragm may driveair to vibrate, and the sound source 3020 may be formed at a soundoutput hole through a sound guiding channel 3022. A sound guidingchannel may refer to a sound propagation route from the vibrationdiaphragm to a corresponding sound output hole. In some embodiments, asound guiding channel may be a route surrounded by a specific structure(e.g., the earphone core housing 41, or the circuit housing 10) on theloudspeaker. It should be noted that, in some embodiments, the soundsource 3010 and the sound source 3020 may also be generated by differentvibration apparatuses through vibrations of different vibrationdiaphragms, respectively.

In some embodiments, part of the sound generated by the sound source3010 and the sound source 3020 may be transmitted to the user's ear andform a sound heard by the user, and the other part may be transmitted tothe environment and form a sound leakage. Considering that the soundsource 3010 and the sound source 3020 are relatively close to the user'sear, for convenience of description, the sound transmitted to the user'sear may be called near-field sound, and leaked sound transmitted to theenvironment may be called far-field sound. In some embodiments, thefrequencies of the near-field sound and the far-field sound generated bythe loudspeaker apparatus may be related to a distance between the soundsource 3010 and the sound source 3020. Generally, the near-field soundand the far-field sound (leakage) generated by the loudspeaker apparatusmay increase with the distance between the two sound sources.

In some embodiments, the distance between the sound source 3010 and thesound source 3020 may be designed separately, such that a low-frequencynear-field sound (e.g., sound with a frequency less than 800 Hz)generated by the loudspeaker apparatus may be as large as possible, anda high-frequency far-field sound (e.g., a sound with a frequency greaterthan 2000 Hz) may be as small as possible. In order to achieve the abovepurpose, the loudspeaker apparatus may include two or more groups oftwo-point sound sources. Each group of two-point sound sources mayinclude two sound sources similar to the sound source 3010 and the soundsource 3020, which may generate sounds with specific frequencies,respectively. Specifically, a first group of two-point sound sources maybe configured to generate low-frequency sounds, and a second group oftwo-point sound sources may be configured to generate high-frequencysounds. In order to obtain a large low-frequency near-field sound, adistance between the two sound sources in the first group of two-pointsound sources may be set to be a large value. And since thelow-frequency signal has a long wavelength, a large distance between thetwo sound sources in the first group may not cause an excessive phasedifference in the far field, and may not cause too much sound leakage inthe far field. In order to obtain a small high-frequency far-fieldsound, the distance between two sound sources in the second group oftwo-point sound sources may be set to be a small value. Since thehigh-frequency signal has a short wavelength, a small distance betweenthe two sound sources may avoid a formation of a large phase differencein the far field, and may avoid a formation of large sound leakage. Thedistance between the two sound sources in the second group may be lessthan in the first group.

The above descriptions of the loudspeaker apparatus are only a specificexample and should not be considered as the only feasibleimplementation. Obviously, for those skilled in the art, afterunderstanding the basic principle of the loudspeaker apparatus, it ispossible to make various modifications and changes in the structureand/or related methods of the loudspeaker apparatus without departingfrom this principle, but these modifications and changes are stillwithin the scope described above. For example, the earphoneholder/earphone strap 1201 may include at least one type of memoryalloy. The user may change the shape of the earphone holder/earphonestrap 1201 as needed such that the earphone holder/earphone strap 1201may fit a contour of the head. All such variations are within theprotection scope of the present disclosure.

The beneficial effects of the present disclosure embodiment include, butare not limited to: (1) the circuit housing, the first protectivehousing, and the second protective housing may be molded separately soas to protect a control circuit or a battery from damages caused by ahigh temperature; (2) the first protective housing and the secondprotective housing may not completely cover the entire circuit housing,and components for user interaction may be exposed, which may beconvenient for users to use; (3) there is no need to set a separatespace for flexible circuit board(s), which may further improve spaceutilization; (4) the first contact surface and the second contactsurface may be accurately positioned by aligning the magnetic adsorptionring to realize the matching connection with the corresponding charginginterface, thereby improving the accuracy of the coupling with thecorresponding charging interface; (5) the loudspeaker apparatus may havegood elasticity, which may maximize the wearing comfort. It should benoted that different embodiments may have different beneficial effects.In different embodiments, the possible beneficial effects may be any oneor a combination of the above, and may also be any other possiblebeneficial effects.

The basic concepts have been described above. Obviously, to thoseskilled in the art, the disclosure of the invention is merely by way ofexample, and does not constitute a limitation on the present disclosure.Although not explicitly stated here, those skilled in the art may makevarious modifications, improvements and amendments to the presentdisclosure. These alterations, improvements, and modifications areintended to be suggested by this disclosure, and are within the spiritand scope of the exemplary embodiments of this disclosure.

We claim:
 1. A battery assembly, comprising: a battery; and a flexible circuit board connected to the battery and configured to transmit electronic power from the battery to one or more external electronic devices, wherein a first region of the flexible circuit board is bent towards the battery such that a second region of the flexible circuit board is attached to a side surface of the battery.
 2. The battery assembly of claim 1, wherein one end of the first region is connected to the battery and an opposite end of the first region is connected to the second region of the flexible circuit board.
 3. The battery assembly of claim 2, wherein the flexible circuit board includes a plurality of bonding pads, and two of the plurality of bonding pads are electrically connected to a positive terminal and a negative terminal of the battery, respectively, by flexible leads.
 4. The battery assembly of claim 3, wherein the plurality of bonding pads are arranged on the second region of the flexible circuit board, and the flexible leads are arranged on the first region of the flexible circuit board.
 5. The battery assembly of claim 3, wherein at least one of the plurality of bonding pads is electrically connected to the one or more external electronic devices by wires.
 6. The battery assembly of claim 2, wherein the battery includes a body region and a sealing region, a side surface of the sealing region and a side surface of the body region form a step structure.
 7. The battery assembly of claim 6, wherein the second region of the flexible circuit board is attached to the sealing region of the battery.
 8. The battery assembly of claim 6, wherein the battery includes a hard circuit board arranged on another side surface of the sealing region, and the battery includes a positive terminal and a negative terminal both of which are arranged on the hard circuit board.
 9. The battery assembly of claim 8, wherein the end of the first region which is connected to the battery is fixedly attached to the hard circuit board.
 10. A loudspeaker apparatus, comprising: a circuit housing configured to accommodate a battery assembly, the battery assembly including: a battery; and a flexible circuit board connected to the battery, wherein a first region of the flexible circuit board is bent towards the battery such that a second region of the flexible circuit board is attached to a side surface of the battery; and an earphone core electrically connected to the flexible circuit board by wires and configured to receive electronic power from the battery to generate sound.
 11. The loudspeaker apparatus of claim 10, wherein one end of the first region is connected to the battery and an opposite end of the first region is connected to the second region of the flexible circuit board.
 12. The loudspeaker apparatus of claim 11, wherein the flexible circuit board includes a plurality of bonding pads, and two of the plurality of bonding pads are electrically connected to a positive terminal and a negative terminal of the battery by flexible leads.
 13. The loudspeaker apparatus of claim 12, wherein the plurality of bonding pads are arranged on the second region of the flexible circuit board, and the flexible leads are arranged on the first region of the flexible circuit board.
 14. The loudspeaker apparatus of claim 12, wherein at least one of the plurality of bonding pads is electrically connected to the one or more external electronic devices by wires.
 15. The loudspeaker apparatus of claim 11, wherein the battery includes a body region and a sealing region, a side surface of the sealing region and a side surface of the body region form a step structure.
 16. The loudspeaker apparatus of claim 15, wherein the second region of the flexible circuit board is attached to the sealing region of the battery.
 17. The loudspeaker apparatus of claim 15, wherein the battery includes a hard circuit board arranged on another side surface of the sealing region, and the battery includes a positive terminal and a negative terminal both of which are arranged on the hard circuit board.
 18. The loudspeaker apparatus of claim 17, wherein the end of the first region which is connected to the battery is fixedly attached to the hard circuit board.
 19. The loudspeaker apparatus of claim 10, further comprising: an ear hook connected to one end of the circuit housing, wherein the earphone core is connected to one end of the ear hook.
 20. The loudspeaker apparatus of claim 10, wherein: the earphone core at least includes a contact surface that is in direct or indirect contact with a user, and a pressure between the contact surface and the user is larger than 0.1N and less than 5N. 